Update support in database content management
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United States of America Patent
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May 13, 2003
Grant Date -
N/A
app pub date -
Dec 16, 1999
filing date -
Dec 16, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A computer system updates a data object that is maintained in data storage external to a database management system (DBMS), after receiving an update request from a DBMS client for the data object, by first scheduling the update request with the DBMS to provide access to the external data object, then initiating a subtransaction in the DBMS for the update request, updating the data object with an in-place update action at the external data storage to thereby produce an updated data object and also updating the DBMS metadata of the data object, next appending information relating to type and time of the update action in an object version table, and then executing a backup operation of the updated data object. This permits update-in-place operations on the external data object, under supervision of the DBMS. The system thereby supports update-in-place operations on external data with access control, backup and recovery, and transaction consistency in accordance with a database management system, while avoiding large copy operations that would consume network resources.
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